To Repeat:
Open any resource Inv page, to bring up left nav. Expand the RHQ server resource, click the "Applications" autogroup. Nothing happens. In the logs there is this error:
2009-01-30 13:52:01,261 WARN [javax.enterprise.resource.webcontainer.jsf.lifecycle] /rhq/resource/navigation/ResourcesTree.xhtml @48,73 nodeSelectListener="#{ResourceTreeStateAdvisor.nodeSelectListener}": java.lang.NullPointerException